Collapsible protective structure

Details Collapsible protective structure Collapsible protective structure

1987-04-22

1989-03-21

Scherbel, David A.

Tent, canopy, umbrella, or cane

Portable shelter

Umbrella-type

135 20M, E04H 1500, A45B 2300

Patent

active

048134422

ABSTRACT:
This application relates to a foldable and collapsible protective structure in the form of a canopy supported on a shaft mounted on a supporting base in which a plurality of radially positioned arms are actuated into open or closed position by means of a plurality of braces hinged at one end to said arms and at the other end to a sleeve slidably mounted over said shaft and in which the movement of said sleeve is actuated by an arm attached to said sleeve at the bottom thereof.

REFERENCES:
patent: 962339 (1910-06-01), Gregory
patent: 1801913 (1931-04-01), Frederick
patent: 3850186 (1974-11-01), Weber et al.
patent: 3889698 (1975-06-01), Roessl
patent: 3902264 (1975-09-01), Radig
patent: 4011881 (1977-03-01), Becher
patent: 4433699 (1984-02-01), Schultes et al.
patent: 4614059 (1986-09-01), Trampe
patent: 4637415 (1987-01-01), Dalo
patent: 4685482 (1987-08-01), Yung

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